cooler bag

cooler bag (plural cooler bags)

1. Insulated bag used to keep food items cool for a limited amount of time (for example on the way from a grocery store to one's house).

   Synonyms: cool bag, thermal bag, insulated bag

• freezer bag

• “cooler bag”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “cooler bag”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.